采用高温固相反应的方法合成了Li0.3La2/3-xAlxTi0.7-xSixP0.3O3.3系统锂快离子导体.交流阻抗测量表明,随着高岭石掺杂量的增加体系的室温离子电导率从9.0×10-5S/cm下降到9.73×10-6S/cm.利用电导率与温度的关系计算出其从25～400℃温区里的平均活化能约为20kJ/mol.X射线粉末衍射显示高岭石掺杂对复合体系的结构没什么影响,体系仍然具有钙钛矿型结构,主要相态为Li3xLa2/3-xTiO3钙钛矿固溶体和LaPO4,由于高岭石中所含的杂质,随着高岭石掺杂量的增加(x＞0.04)而出现未知的杂相;红外测试表明Si4+、Al3+的引入使得PO4 3-的畸变得到抑削.
参考文献
| [1] | WANG Wenji;LI Duanyang .[J].Ceylon Journal of Science,1995,2(01):26-29. |
| [2] | WANG Wenji et al.[J].Chemical Research in Chinese University,1997,13(02):146-149. |
| [3] | Hong H Y P .[J].Materials Research Bulletin,1978,13:117. |
| [4] | Varez A;Garica-Alvarado F;Moran E et al.[J].Journal of Solid State Chemistry,1995,118:78. |
| [5] | Varez A;Garica-A[varado F;Moran E et al.[J].Journal of Solid State Chemistry,1995,118:78-83. |
| [6] | Bohnke C;Bbohnke O;Fourquet J L .[J].Journal of the Electrochemical Society,1997,114:4. |
| [7] | Barrau R M;Souquet B .[J].Journal of Non-Crystalline Solids,1980,38-39:271. |
| [8] | Mercier R;Malugani J P;Fahys B et al.[J].Solid State Ionics,1981,5:663. |
| [9] | Wade H;Menetrier M;Levasseur A et al.[J].Materials Research Bulletin,1983,18:189. |
| [10] | Pradel A;Ribes M .[J].Solid State Ionics,1986,18-19:351. |
| [11] | Inaguma Y et al.[J].Solid State Ionics,1993,86(10):689-693. |
| [12] | Liu Huiyong;Wang Wenji;Liu guirong .[J].Ionics,2001,7:229. |
| [13] | Liu Huiyong;Wang Wenji;Wu S T .[J].Ionics,2002,8:278. |
| [14] | Liu Huiyong;Liao Benren;Lian Fenyan et al.[J].Ionics,2003,9:227. |
| [15] | Liu Huiyong;Wang Wenji;Li Ronghua .Effect of Sr~(2+) on Properties of Li_(0.2375+x)La_(0.5875-x)Sr_xTiO_3-LaPO_4 System[J].Journal of Rare Earths,2004(2):223-226. |
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